style improvements
Removing PicketLink quickstarts. They will not be available from a git submodule reference.
Moving PicketLink quickstarts to an external repository
Update license headers
Added servlet-security-genericheader-auth QuickStart, based upon code from Gary Lamperillo. Many thanks to him and sgilda for their work on validating and improving this QuickStart.
Ignore helloworld-errai/...
Update Wicket WAR QS
@Schedule example,  @Timeout example.